نتایج جستجو برای: point cloud processing

تعداد نتایج: 1059214  

Journal: :iranian journal of analytical chemistry 2013
foroozan hasanpour zahra alimirzaei masoumeh taei hamed karimi r. samimi

cloud point extraction and spectrophotometric determination of trace quantities of cadmium in some vegetables have been developed. the research area for vegetables analysis was near to the zarin shahr where the soil received heavy metals from the esfahan steel company. cloud point extraction used dithizone as complexing agent and non ionic surfactant triton-x114 as micellar phase. several impor...

Journal: :ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2015

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2019

Point cloud processing is a rapidly growing research area of computer vision. Introducing of cheap range sensors has made a great interest in the point cloud processing and 3D object recognition. 3D object recognition methods can be divided into two categories: global and local feature-based methods. Global features describe the entire model shape whereas local features encode the neighborhood ...

2017
Reinhold Preiner

In recent years, the scanning of real-world physical objects using 3d acquisition devices has become an everyday task. Such 3d scanners output a set of three-dimensional points, called point cloud, sampling the surface of an object. These samples are typically subject to imperfections like noise, holes and outliers. In computer graphics, the field of surface reconstruction is concerned with the...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2017

Journal: :IEEE transactions on image processing 2021

Along with increasingly popular virtual reality applications, the three-dimensional (3D) point cloud has become a fundamental data structure to characterize 3D objects and surroundings. To process clouds efficiently, suitable model for underlying outlier noises is always critical. In this work, we propose hypergraph-based new that amenable efficient analysis processing. We introduce tensor-base...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
guoqiang xiang shengping wen xiuming jiang xing liu lijun he

a new method for the determination of trace copper(ii) in food samples by cloud point extraction(cpe) combined with flame atomic absorption spectrometry(faas) is presented and evaluated. the method is based on the fact that hydrophobic complex of copper(ii) with sodium diethyldithiocarbamate (ddtc) was formed at ph 6.0 and subsequently the hydrophobic complex was extracted into surfactant-rich ...

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